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（2010四川省成都市35. 1）I wont be able to understand what you say,_______you speak too quickly. A.if B.though C.because （2010浙江省湖州市，22，1）-Is everyone here today? --No.Tom is at home_____he has got a bad cold. A.because B.if C.until D.unless （2010山西省，27，1）In summer , food goes bad easily ________ it is put in the refrigerator. A. until B. if C. unless （2010河南省，25，1）( ) its difficult to make her dream come true，she never gives up A Though B Unless C Because D If （2010山东省莱芜市，27，1）--I hear Jack Chan will come to Laiwu next week. --Really? _______ he comes, my younger sister will be very happy, A．If B．Until C．Unless D．Before （2010贵州省铜仁市，35，1）- May I go to the concert with you? - Im afraid not ____ you have a ticket, because I have only one. A. since B. if C. unless D. though （2010山东省菏泽市，27，1）Mary spends a lot of money on clothes _______ her family is not rich. A. because B. though C. if D. so 答案：CACAACB | 
